Battery-powered drill

• US 6,376,942 B1
• Filed: 03/13/2000
• Issued: 04/23/2002
• Est. Priority Date: 03/15/1999
• Status: Expired due to Term

• Current Assignee: Hilti Aktiengesellschaft (Hilti Martin Family Trust)
• Original Assignee: Hilti Aktiengesellschaft (Hilti Martin Family Trust)
• Inventors: Burger, Helmut, Fünfer, Josef
• Primary Examiner(s): Ramirez, Nestor
• Assistant Examiner(s): LE, DANG D
• Application Number:
  US09/524,471
• Time in Patent Office: 771 Days
• Field of Search: 310/71, 310/47, 310/50, 429/96, 429/97, 429/100, 429/123, 320/2, 320/3, 320/106, 320/114
• US Class Current: 310/47
• CPC Class Codes: B25F 5/02 Construction of casings, bodies or handles B25F5/006, B25F5/008 take precedence
• CPC Class Codes: H01M 50/247 specially adapted for portable devices, e.g. mobile phones, computers, hand tools or pacemakers
• CPC Class Codes: Y02E 60/10 Energy storage using batteries

Abstract

A battery-powered drill including a housing (2) with a handle (3), an electrical drive motor (19) located in the housing (2) a battery unit (11) insertable into the housing (2) and fixedly securable therein for supplying electrical power to the electrical drive motor, a connection device for connecting the battery unit (11) with the electrical drive motor (19) and including a connector element (10) projecting from the battery unit (11) and a mating connector element (9) provided in the housing (2) and electrically connectable with the connector element (10) provided on the battery unit (11), and a press pin element for supporting the battery unit on the housing (2) and displaceable against a spring-biasing force upon the mounting of the battery unit (11) on the housing (2) for securing the battery unit (11) on the housing (2).

Claims

1. A battery-powered drill, comprising a housing (2);

a handle (3) connected with the housing (2);

an electrical drive motor (19) located in the housing (2);

a battery unit (11) insertable into the housing (2) and fixedly securable therein for supplying electrical power to the electrical drive motor (19);

connection means for connecting the battery unit (11) with the electrical drive motor (19) and including a connector element (10) projecting from the battery unit (11) and a mating connector element (9) provided in the housing (2) connected with the electrical drive motor (19) and electrically connectable with the connector element (10) provided on the battery unit (11) upon mounting of the battery unit (11) on the housing (2); and

press pin means with which the battery unit 11 is supported on the housing and which are displaceable against a spring-biasing force upon the mounting of the battery unit (11) on the housing (2),

wherein the press pin means is provided on the battery unit (11) and is displaceable in a direction opposite the mounting direction of the battery unit (11), and wherein the spring-biasing force is applied by spring means (18) located in the battery unit (11),

wherein the battery-powered drill further comprises means connected with the housing (2), projecting into the battery unit (11) upon mounting of the battery unit (11) on the housing (2), and defining a mating surface cooperating with the press pin means (17), and

wherein the means connected with the housing companies bolt means (8) connected with the housing (2) and arranged coaxially with the press pin means, a free end of the bolt means defining the mating surface, and the bolt means having an outer diameter smaller than an outer diameter of the press pin means (17).

2. A battery-powered drill, comprising a housing (2);

a handle (3) connected with the housing (2);

an electrical drive motor (19) located in the housing (2);

a battery unit (11) insertable into the housing (2) and fixedly securable therein for supplying electrical power to the electrical drive motor (19);

connection means for connecting the battery unit (11) with the electrical drive motor (19) and including a connector element (10) projecting from the battery unit (11) and a mating connector element (9) provided in the housing (2) connected with the electrical drive motor (19) and electrically connectable with the connector element (10) provided on the battery unit (11) upon mounting of the battery unit (11) on the housing (2);

means (14, 15) for retaining the battery unit (11) on the housing (2); and

press pin means (17) displaceable against a spring-biasing force upon the mounting of the battery unit (11) on the housing (2) for preventing relative movement between the connector elements (9, 10) during operation of the drill.

3. A battery-powered drill according to claim 2, wherein the press pin means is provided on the battery unit (11) and is displaceable in a direction opposite the mounting direction of the battery unit (11), and wherein the spring-biasing force is applied by spring means (18) located in the battery unit (11).